The present invention refers to a self-assemblable container, preferably manufactured from ecologic materials such as standard 
fiberboard, comprising as its main structural elements a bottom, two longitudinal sides and two transverse sides of a basically rectangular shape having cauterized perimetrical faces to prevent 
moisture penetration into the structural elements that make up the container, thus providing long term structural stiffness to the perimetrical faces of the container's structural elements comparable to that of the 
fiberboard surface. Each of the main structural elements comprises in one side adjacent to another corresponding main 
structural element, tensile-resistant flexible tabs or receiving slots, the other corresponding main 
structural element in said side adjacent to the first main 
structural element respectively comprising slots or flexible tensile resistant tabs, said main structural elements being assembled together by the 
insertion of the flexible tabs into the receiving slots. In addition, the container may comprise an antisagging brace, a lid and / or two transverse laths. The invention also refers to a method of manufacturing the structural elements of a self-assemblable container by means of perimetrical 
laser cutting that by reason of the extremely high 
cutting temperature causes a reaction of the natural resins contained in the 
raw material and the resulting perimetrical 
cauterization.